I need help with this accounting question. Please show all work, thank you!

Which of the following statements is correct with respect to inventories?

a$.$ The FIFO method assumes that the costs of the earliest goods acquired are the last to be sold.

b$.$ It is generally good business management to sell the most recently acquired goods first.

c$.$Under FIFO, the ending inventory is based on the latest units purchased.

d$.$FIFO seldom coincides with the actual physical flow of inventory.